package com.security.it.browser;

import com.security.it.support.SimpleResponse;
import com.security.it.core.properties.SecurityProperties;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.savedrequest.HttpSessionRequestCache;
import org.springframework.security.web.savedrequest.RequestCache;
import org.springframework.security.web.savedrequest.SavedRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Objects;

@Slf4j
@RestController
public class BrowserSecurityController {
    @Autowired
    private SecurityProperties securityProperties;

    private RequestCache requestCache = new HttpSessionRequestCache();

    private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

    /**
     * 当需要身份认证时,跳转到这里
     *
     * @param request
     * @param response
     * @return
     */
    @RequestMapping("authentication/require")
    @ResponseStatus(code = HttpStatus.UNAUTHORIZED)
    public SimpleResponse requireAuthentication(HttpServletRequest request, HttpServletResponse response) throws IOException {
        SavedRequest savedRequest = requestCache.getRequest(request, response);
        if (Objects.isNull(savedRequest)) {
            return SimpleResponse.builder().message("访问的服务需要身份认证").build();
        }
        String targetUrl = savedRequest.getRedirectUrl();
        log.info("引发跳转的请求是：{}", targetUrl);
        if (StringUtils.endsWithIgnoreCase(targetUrl, ".html")) {
            redirectStrategy.sendRedirect(request, response, securityProperties.getBrowser().getLoginPage());
        }
        return SimpleResponse.builder().message("访问的服务需要身份认证").build();
    }
}
